(19)

(11)

EP 3 886 775 A1

(12)

(43) Date of publication: 06.10.2021 Bulletin 2021/40 (21) Application number: 19821439.7 (22) Date of filing: 29.11.2019

(51) International Patent Classification (IPC):  A61F 5/058(2006.01) (52) Cooperative Patent Classification (CPC): A61F 5/05841; A61F 5/05825 (86) International application number: PCT/EE2019/000001 (87) International publication number: WO 2020/108722 (04.06.2020 Gazette 2020/23)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 29.11.2018 EE 201800030 U 19.11.2019 EE 201900063 U (71) Applicant: Ethr Oü 10150 Tallinn (EE)	(72) Inventors: MASSO, Mihkel 10920 Tallinn (EE) ARRO, Rait 11622 Tallinn (EE) (74) Representative: Käosaar, Jüri  Käosaar & Co Patent Agency Tähe 94 50107 Tartu 50107 Tartu (EE)